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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

An 48 h acute toxicity test using Daphnia magna was performed following OECD Guideline 202 in accordance to GLP. 2 to 24 h old 20 daphnids, divided into 4 replicates, each with 5 daphnids per concentration level, pH-control and control. Daphnia was exposed to disodium hexafluorosilicate in water solutions of concentrations of 6.25 - 12.5 - 25.0 - 50.0 - 100 mg/L.EC100-values after 24 and 48 h, the NOEC and LOEC after 48 h were deduced directly from the observation data without mathematical calculation. 48 h EC50 was determined to be 35.4 mg/l and NOEC and NOEL were calculated to be 25 & 50 mg/l respectively.

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
35.4 mg/L

Additional information

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